When designing a program using the three-tier approach,a primary rule is that classes in the presentation tier can communicate only with classes in the ____ tier.
A) business
B) data access
C) persistence
D) validation

Question

Quizplus · Accepted Answer

The presentation tier is responsible for displaying the graphical user interface (GUI) to the user, accepting user inputs, and presenting the results. It should not have direct access to the database, as this could compromise security and performance. Instead, it should communicate with the business tier or logic layer, which contains the application's business logic and rules. The business tier can then access the data access layer or persistence tier, which deals with storing, retrieving, and manipulating data in a database or other storage medium. The validation tier, if present, would be part of the business tier and responsible for verifying user inputs and ensuring data integrity.

When Designing a Program Using the Three-Tier Approach,a Primary Rule